WO2016041860A1

WO2016041860A1 - Organic light-emitting diode and lighting device

Info

Publication number: WO2016041860A1
Application number: PCT/EP2015/070830
Authority: WO
Inventors: Norbert Haas; Thorsten VEHOFF; Johannes Rosenberger
Original assignee: Osram Oled Gmbh; Osram Gmbh
Priority date: 2014-09-18
Filing date: 2015-09-11
Publication date: 2016-03-24
Also published as: DE102014113492A1; DE102014113492B4

Abstract

In one embodiment, the organic light-emitting diode (1) comprises a support (2), a first electrode (31), and a second electrode (32). An organic layer sequence (4) with an active layer for generating visible light is located between and directly on the electrodes (31, 32). The first electrode (31) is translucent for the generated light, and the second electrode (32) is reflective for the generated light. Additionally, the second electrode (32) has at least two reflective regions (51, 52) which are located adjacently when seen in a plan view of a main face (20) of the support (2) and which have different reflectivities, in particular spectral reflectivities, for visible light.

Description

description

Organic light-emitting diode and lighting device An organic light-emitting diode is specified. Furthermore, a lighting device is specified.

One problem to be solved is to have an organic one

LED to be indicated in the switched on and in the

turned off state may have different appearances.

This task is partly due to an organic

LED and solved by a lighting device with the features of the independent claims. Preferred developments are the subject of the dependent claims.

In accordance with at least one embodiment, the light-emitting diode comprises one or even two carriers. The at least one carrier may be the LED mechanically

stabilizing component act. Preferably, the carrier is radiation-transmissive for radiation generated during operation of the light emitting diode. The carrier can be mechanically rigid or too

be designed mechanically flexible. By way of example, the carrier is a glass plate, a glass foil, a plastic foil or a ceramic plate.

In accordance with at least one embodiment, the organic light-emitting diode comprises a first electrode and a second electrode. Preferably, one of the electrodes is attached directly to the carrier or is a component of the carrier. In accordance with at least one embodiment, the organic light-emitting diode has at least one organic layer sequence with at least one active layer. The active layer is adapted to generate electromagnetic radiation, preferably visible light. For example, white or colored light, such as blue light and / or green and / or red light, is generated in the active layer during operation of the light-emitting diode. Furthermore, it is possible for the organic layer sequence to comprise a plurality of active layers stacked one above the other to produce light of different spectral composition, for example a blue light generation layer and a green light generation layer and a red light generation layer.

According to at least one embodiment, the organic layer sequence with the active layer is located between the two electrodes. It is possible that the organic layer sequence directly adjoins the two electrodes and touches them. During operation of the light-emitting diode, the organic layer sequence is supplied with current via the two electrodes.

In accordance with at least one embodiment, the first electrode is permeable locally or over the whole area for the light generated during operation of the light-emitting diode in the active layer.

Here, the first electrode over the entire

Spectral range of the light generated to be transparent or even only over one or more spectral portions of the generated light. The first electrode is preferred

continuous and unstructured. That is, the first one

Electrode can extend over the entire organic light-emitting diode and / or organic layer sequence in unchanged material composition and / or layer thickness. The first electrode and preferably also the second electrode are not pixelated then. For example, the first electrode is energized homogeneously or largely homogeneously, so that

Over the entire surface of the first electrode, a current injection into the organic layer sequence takes place and no further, in particular no electrically insulating layers, between the first electrode and the organic

Layer sequence are located. In accordance with at least one embodiment, the second one

At least partially reflective electrode for the generated light. Preferably, the second electrode over the entire organic layer sequence is reflective of the light generated and further preferably radiopaque. That is, no or no significant portion of the light generated in the active layer is transmitted through the second electrode.

According to at least one embodiment, the second

Electrode two or more than two reflection areas. The reflection ranges differ in their

Reflectivity for visible and / or white and / or

colored light, in particular for the light generated in the active layer. Further preferred are the

Reflecting areas different reflectivities for white and / or colored light, especially for ambient light such as sunlight or light from artificial light sources such as fluorescent tubes, organic light-emitting diodes or incandescent lamps, on. The differences in the reflectivity can only occur in intensity, ie cause a bright-dark characteristic. Preferably, however, the reflectivities differ with respect to the spectral ranges. In other words, the reflection areas can then be in reflect different spectral ranges to different degrees. It is possible that in spectral

Subregions the reflection areas equally strong

reflect, within the manufacturing tolerances.

According to at least one embodiment, the

Reflection areas, seen in plan view of a main side of the carrier, side by side. That is, for one

Viewers of the main page, the reflection areas are then recognizable as lying side by side, at least in

switched off state of the LED.

In at least one embodiment, the light-emitting diode comprises a carrier as well as a first electrode and a second one

Electrode. An organic layer sequence with an active layer for generating visible light is located between and directly at the two electrodes. The first

The electrode is permeable to the generated light and the second electrode is reflective of the generated light. Furthermore, the second electrode has at least two

Reflection areas on, in plan view of a

Main side of the carrier are seen side by side and have the different reflectivities, especially in spectral terms, for visible, preferably white and / or red light.

By such an organic light emitting diode is in one

switched state a homogeneous appearance, in particular with respect to a color and a luminance of the emitted light guaranteed. At the same time, the LED is switched off in the switched-off state

varied appearance with a specular or diffuse reflecting electrode, in particular cathode, reachable. In other words, the light-emitting diode can appear homogeneously bright in the switched-on state and in the switched-off state can show a pattern, a symbol and / or regions that protrude from one another.

In conventional organic light-emitting diodes, OLEDs for short, a pattern is produced, in particular, by the fact that a pattern is engraved, for example after the OLED has been produced, and thus only subsequently engraved. Thus, the pattern is visible both in the on state and in the on state, which is undesirable for some applications, such as in the automotive sector. Also, by such a subsequent creation of a pattern targeted color is limited. Similarly, a lifetime of the OLED and a current distribution in the

organic layer sequence may be negative

influenced.

In accordance with at least one embodiment, the second electrode is a metallic electrode. That is, a current-carrying layer or the second electrode as a whole, in particular the at least two reflection regions, are then formed from at least one metal or at least one metal alloy.

According to at least one embodiment, the

Reflection areas formed from mutually different metals or metal alloys. For example, one of the reflection areas is made of silver or aluminum, and the other reflection area has or consists of copper or gold. In accordance with at least one embodiment, the active layer extends continuously and continuously

contiguous across the reflection areas. A structuring of the second electrode in the

Reflection ranges is then preferred to the second

Electrode limited and does not extend to the

organic layer sequence or the first electrode.

In accordance with at least one embodiment, the materials for the reflection regions are arranged laterally next to one another, seen in plan view. In this case, the materials for the reflection regions preferably do not overlap or do not overlap

significant. Not significant means that one

Overlapping area, for example, at most 10 ym or 5 ym or 2 ym and / or at most 5% or 1% of a mean

lateral extent of the reflection ranges.

In particular, there is no additional overlapping of the reflection areas due to this

realized technical or optical function.

In accordance with at least one embodiment, the material is applied continuously from a first of the reflection regions and can thus extend completely over the second electrode and / or the organic layer sequence. The

Material of the at least one second reflection region is on the material of the at least one first

Reflection area applied and is located with it

between the first reflection region and the organic layer sequence. A pattern to be displayed, for example a symbol or a lettering, is then defined by the shape of the at least one second reflection region which is applied to the continuous first reflection region. In accordance with at least one embodiment, the second electrode comprises a planarization layer. The

Planarization layer is preferably applied in places or over the entire surface between the organic layer sequence and the first reflection region. It is also possible that the planarization layer is also applied between the organic layer sequence and the second reflection region. The planarization layer is preferably designed to be electrically conductive and in particular made of an inorganic material, for example a transparent conductive oxide, in short TCO. It can be achieved by the planarization layer that a side of the second electrode facing the organic layer sequence is formed planar and planar and does not reproduce the structuring in the reflection regions with respect to a surface morphology.

According to at least one embodiment, the

Reflection areas independently of each other electrically

operable and / or energized. In other words, the reflection areas can then be switched on and off independently of each other.

In accordance with at least one embodiment, in the switched-off state of the light-emitting diode, the light-emitting diode is specifically designed for the reflection regions due to their different reflectivities

monochrome or multicolor ambient light and / or white light for a viewer a first icon shown. For example, the first symbol is a

Lettering, a pattern, a pictogram or a logo. The first symbol, roughly by a material of the first

Reflection areas is defined may be lighter or darker and / or different colors of a background, for example, formed by the first reflection area, stand out.

In accordance with at least one embodiment, a second symbol is shown in a first switched-on state by the reflection regions for a viewer. In the first

turned on state, for example, only one of the reflection areas or become several similar

Reflection areas or all areas of reflection are energized. The energization of the reflection regions can take place at the same time and / or in a time sequential sequence. So it can be different, different

Operating conditions exist. So can sequences of

Light patterns and / or reflection patterns are generated, for example, the signaling in the automotive sector

can be applied.

The symbol is then formed, for example, by different current impressions in the reflection regions into the active layer. It is possible for the current intensity in the reflection regions to be variably set independently of one another, so that the second symbol can be more clearly or less clearly visible relative to one another depending on the current intensity of the reflection regions. Optionally, several different such first switched-on states may be present, for example by operating different second reflection regions.

In accordance with at least one embodiment, in a second switched-on state for a viewer, the light-emitting diode is realized as a homogeneous, unstructured luminous area. In other words, the differences in the

Reflection areas in terms of their reflectivity then in switched-on state is outshined by the light generated in the active layer. It is possible for the first switched-on state, in which the second symbol is visible, and the second switched-on state, in which an unstructured luminous area is present, to be present in the same organic light-emitting diode as different operating states.

According to at least one embodiment, the

Reflection areas per at least one of the following

Materials or consist of one or more of these materials: silver, aluminum, gold, calcium, cobalt,

Copper, magnesium, manganese, molybdenum, nickel, lead, palladium, ruthenium, silicon, tin, zinc. In particular, one of the reflective areas is silver, a silver alloy,

Aluminum or an aluminum alloy molded. The other reflection region is then preferably made of gold or copper or a copper alloy such as a bronze or a

Brass formed.

In accordance with at least one embodiment, a first of the reflection areas, viewed in plan view on the main side, is round and continuous of a second of

Surrounded by reflection areas. For example, the second reflection region forms a continuous ring around the first reflection region. The first reflection area is, for example, as a dot or lettering or sign

shaped. In accordance with at least one embodiment, the light-emitting diode has a plurality of the first and / or a plurality of the second

Reflection areas on. In accordance with at least one embodiment, one of the first reflection areas is around one of the second

Surrounding reflection regions and at least one of the second reflection regions is surrounded all around and continuously by one of the first reflection regions. The reflection areas can thus, seen in plan view, each other

penetrate or surround.

In accordance with at least one embodiment, the active layer is continuous, uninterrupted, and contiguous over all

Reflection areas away for generating light provided and thus not pixelated. In particular, the active

Layer throughout to generate light of the same

set up spectral composition. That is, the active layer then does not have a deliberately introduced material gradient and is not local to the emission of light of different colors and / or intensities

set up . In accordance with at least one embodiment, the light-emitting diode is a surface light source. A medium

lateral dimension of the main page and / or one

light-emitting surface is then, in plan view

preferably at least 1 cm or 5 cm or 10 cm or 20 cm and / or at most 120 cm or 60 cm or 30 cm.

A mean dimension of the reflection regions, seen in plan view, is for example at least 2.5 mm or 5 mm or 10 mm or 30 mm and / or at most 50 cm or 20 cm or 10 cm. In other words, the reflection ranges in terms of their dimensions, seen in plan view, at least chosen so large that it easily with the naked eye at a normal viewing distance from a viewer are recognizable, in particular in terms of their size and their reflectivities in the off state of

Led. A normal viewing distance is

for example, at least 30 cm or 60 cm or 1 m or 2 m.

In accordance with at least one embodiment, the active layer is for generating white light or for generating

decorated in colored light. For example, the light emitting diode emits white light in places or over the entire surface, especially in areas where the second

Electrode a high and spectrally independent

Reflectance has. Furthermore, the light-emitting diode can emit locally yellow, orange or red light, in particular in regions of the second electrode which have a smaller reflectance for short-wave, for example blue and / or green light.

In addition, a lighting device is provided which comprises at least one organic light-emitting diode as described in connection with one or more of the abovementioned embodiments. Features of the organic light emitting diode are therefore also disclosed for the lighting device and vice versa.

According to at least one embodiment, the

Lighting device, a vehicle lamp or a part of a vehicle lamp. For example, the associated one

Vehicle light is a daytime running light, a turn signal, a tail light, a brake light or an interior light. The corresponding vehicle is in particular a motor vehicle such as a car. In the following, an organic light-emitting diode described here will be explained in more detail with reference to the drawing with reference to exemplary embodiments. The same reference numerals indicate the same elements in the individual figures. However, there are no scale relationships shown, but individual elements can be shown exaggerated for better understanding.

Show it:

Figures 1 to 3 are schematic sectional views of

Embodiments of organic light-emitting diodes described here, Figures 4 to 7 are schematic plan views

Embodiments of organic light-emitting diodes described here in the switched on and in the off state, and Figure 8 is a schematic representation of emission spectra of embodiments of organic light emitting diodes described herein.

FIG. 1 shows an exemplary embodiment of an organic light-emitting diode 1. The organic light emitting diode 1 comprises a support 2 which is transparent to visible light. The carrier 2 may be clear or diffused. The carrier 2 has a main side 20. On the support 2, which is made of glass, for example, there is a first electrode 31, which is

extends continuously over the carrier 2 away. The first electrode 31 is made of a transparent material, for example conductive oxide such as indium tin oxide, ITO short, shaped. The first electrode 31 is transparent, preferably transparent, for visible light, especially for white light. An organic layer sequence 4 is located on a side of the first electrode 31 facing away from the carrier 2. The organic layer sequence 4 has at least one active layer for producing visible light.

For example, white or red light is generated in the organic layer sequence 4 during operation of the light-emitting diode 1. The organic layer sequence 4 also extends

contiguous and in unmodified composition across the carrier 2. On a side facing away from the carrier 2 of the organic

Layer sequence 4 is directly a second electrode 32

applied. The two electrodes 31, 32 and the organic layer sequence 4 are preferably congruent or

approximately congruently arranged one above the other, seen in plan view.

The second electrode 32 includes a first one

Reflection region 51 and at least a second

Reflection region 52. The reflection regions 51, 52 are formed of mutually different metals or metal alloys. It is the two reflection regions 51, 52

impermeable to visible light. By way of example, a thickness of the reflection regions 51, 52 is each at least 50 nm or 100 nm or 150 nm. In the lateral direction, that is to say in FIG

Left-right direction in Figure 1, close the

Reflection regions 51, 52 directly to each other, so that no gaps between the reflection regions 51, 52 are formed. The reflection areas 51, 52 do not overlap, as viewed in plan view on the main side 20.

On a side facing away from the carrier 2 of the second electrode 22 is a connecting means 6. In the

Connecting means 6 may be an adhesive. About the connecting means 6 is a cover 7,

for example, from a glass, attached to the support 2. About the connecting means 6 and the cover 7, the organic layer sequence 4, together with the carrier 2, sealed.

As an alternative to the connecting means 6 can between the

Cover 7 and the second electrode 32 may also be formed a cavity. Furthermore, a paste instead of the

Connecting means 6 occur, for example, to a

improved heat dissipation or even to capture moisture and / or oxygen. Furthermore, it is possible that instead of or in addition to the connecting means 6, a so-called thin-film encapsulation for the protection of the second

Electrode 32 and the organic layer sequence 4 is present.

In the case of the light-emitting diode described here, therefore, different materials in the second electrode 32 are connected to one another

combined. For example, the first reflection region 51 is a gold lettering, which is opposite to the second

Reflection areas 52 lifts off about silver. Likewise, the first reflection region 51 may be a symbol of copper

represent, which stands out against an aluminum of the second reflection regions 52. Using

Different alloys for the reflection areas 51, 52 result in a variety of combination options with respect to a colored impression of the reflection regions 51, 52 in the switched-off state of the light-emitting diode 1.

It is possible that when switched on a

uniform appearance and a uniform appearance in the operation of the light emitting diode 1 on the main page 20 is present. This can be achieved, for example, by the fact that the

Reflections of the materials for the reflection regions 51, 52 with respect to the radiation generated in the organic layer sequence 4 not or not significantly differ from each other. For example, this is possible if red or reddish light is generated in the organic layer sequence 4 and the reflection regions 51, 52 have silver or aluminum on the one hand and copper or gold on the other hand.

In the embodiment, as shown in Figure 2, the second reflection region 52 is a continuous,

coherent material layer formed. The material of the first reflection regions 51 is applied only in places to the material of the second reflection region 52. The first reflection regions 51 are radiopaque, so that the material of the second reflection region 51 can not be recognized locally by the material of the first reflection regions 51 for a viewer of the light-emitting diode 1. The organic layer sequence 4 is locally in direct contact with the first reflection region 51 and the second reflection region 52. Unlike in FIG

Reflection regions 51, 52 in the direction of the organic layer sequence 4 flush with each other. This is the case, for example, when the reflection areas 51, 52 applied to the previously prepared organic layer sequence 4, for example by means of vapor-deposited masks. According to FIG. 3, a planarization layer 53 of the second electrode 32 is located in places between the

organic layer sequence 4 and the second

Reflection region 52. Unlike drawn in Figure 3, it is possible that the planarization layer 53 in the direction away from the cover 7 flush with the first

Reflection region 51 completes, so that the organic

Layer sequence 4 in direct contact with the first

Reflection region 51 stands. The structuring in the reflection regions 51, 52 in relation to the organic layer sequence 4 is masked by the planarization layer 53. The continuous planarization layer 53 is formed, for example, of a transparent conductive oxide. Such a planarization layer 53 can also be used in all others

Embodiments as a continuous, unstructured

Layer be present and between the organic

Layer sequence 4 and the reflection regions 51, 52 are located.

In FIGS. 1 to 3, the organic light emitting diodes 1 are each shown as so-called bottom emitters, in which a radiation generated in the active layer through the

Carrier 2 is emitted through. Alternatively, radiation may also be emitted through the cover 7. The electrodes 31, 32 are then preferably arranged reversed. It is also conceivable that the second electrode 32 is partially transparent to radiation, so that the

organic light-emitting diode 1 total when switched off semitransparent appears and in the on state Light on both sides, ie in particular on the main side 20 of the carrier 2 and on the cover 7, emitted.

In the figures 4 to 7 each plan views of the light emitting diodes 1 are shown. The parts of the figure A relate in each case to the switched-off state of the light-emitting diode 1. In the parts B and optionally C, the associated light-emitting diodes 1 are shown in the switched-on state. According to FIG. 4, the first reflection region 51 is formed as a circle, which is surrounded on all sides by the second reflection region 52, cf. for example also FIG

turned off state, see Figure 4A appears

For example, the first reflection region 51 brighter than the surrounding second reflection region 52. In a first on state, see Figure 4B, the second reflection region 52 may appear brighter than the first

Reflection region 51, or vice versa. In a second switched-on state, cf. FIG. 4C, the main side 20 appears to be homogeneously luminous to a viewer and thus displays a uniform luminance and color.

It is possible that only one of the switched-on states according to FIGS. 4B and 4C can be present in the light-emitting diode 1 or that it is possible to switch between the two switched-on states, for example by means of an adjustable one

Current intensity of the first and / or second

Reflection range 51, 52. This also applies accordingly to all other embodiments, even if not explicitly shown. Devices for different energizing the reflection regions 51, 52 are not drawn to simplify the illustration. In the exemplary embodiment of the light-emitting diode 1, as shown in FIG. 5, a plurality of rings and a central point are represented by the reflection regions 51, 52. FIG. 6 shows that the light-emitting diode 1 in FIG

switched on and shows a symbol when switched off.

According to FIG. 7, the reflection regions 51, 52 penetrate one another.

In the exemplary embodiments, the reflection region 51, which forms the symbol or character, is lighter in the switched-off state. Alternatively, the reflection area 52 forming the background may be made brighter.

FIG. 8 shows a course of an intensity I in FIG

arbitrary units a.u. represented at a wavelength λ in nm. Shown here is the intensity for the emission of red light of the red light emitting

Light-emitting diode for reflection areas made of silver Ag, aluminum Al and copper Cu. The drawn three emission spectra do not differ significantly from each other. A difference in the

emitted radiation in particular a red light

emitting organic light emitting diode 1 is for a

Observer with the naked eye therefore not recognizable. That is, when using electrodes of aluminum, silver and

Copper is on the one hand in the off state of

Light-emitting diode 1 due to the different reflectivities of these materials, especially in the blue and / or green Spectral range structuring in the reflection areas possible. When switched on, however, the LED emits full-area and homogeneous red light. The organic light-emitting diodes described in connection with the exemplary embodiments can be used, for example, in the automotive sector, for example as a brake light and / or as a flashing light

and / or used for signaling, especially in the case of red light or orange light

Light emitting diodes act. In particular, white light-emitting organic light-emitting diodes can be used, for example, as

Daytime running lights or fog lights are used. Likewise, light-emitting diodes described here can also be used for interior lighting of passenger compartments.

External lighting of the organic light-emitting diode, for example in the switched-off state, can be effected, as already mentioned, by natural or artificial light sources. Especially in the switched-off state of the organic light-emitting diode according to the invention, sequential or simultaneous irradiation with multichromic and / or colored light

diverse reflection effects are generated, as they are

For example, in a vehicle lamp such as a

Rear lights can be used. Thus, for example, a light-emitting diode mounted in a vehicle lamp, especially in the dark, can be illuminated with one or more external light sources, which can be located in the headlight, also in alternating sequence, and thus the executed reflection patterns,

For example, bring a logo, a brand name or the like to advantage. Several of the organic light-emitting diodes described above can be used in a lighting device such as

Vehicle light can be arranged as a matrix, for example in a 2 x 2, 3 x 3, 4 x 4, or generally n x m matrix, where n and m are natural numbers not equal to zero, each of the light emitting diodes can be individually controlled and operated. The individual light-emitting diodes may have a matrix surface which preferably has a light-radiating surface

Lighting device is, completely cover or be spaced apart. The respective ones

Reflection ranges can be designed so that for each light emitting diode or only in the interaction of the

Matrix arrangement, for example, a logo, a brand name or the like results. In this case, the organic light-emitting diodes as white or colored, in particular red light

radiating LEDs can be formed. It is possible that the light-emitting diodes within the matrix all have the same emission spectrum or emit spectrally different spectrums within the manufacturing tolerances.

The invention described here is not by the

Description limited to the embodiments.

Rather, the invention encompasses any novel feature as well as any combination of features, including in particular any combination of features in the claims, even if this feature or combination itself is not explicitly stated in the claims or exemplary embodiments. This patent application claims the priority of German Patent Application 10 2014 113 492.3, the disclosure of which is hereby incorporated by reference. Reference sign list

1 organic light emitting diode

2 carriers

31 first, transparent electrode

32 second, reflective electrode

4 light-generating organic layer sequence

51 first reflection area

52 second reflection area

53 PIanarization layer

6 connecting means

7 cover

I Intensity in arbitrary units (a.u.) λ Wavelength in nm

Claims

claims

Organic light-emitting diode (1) with

a support (2),

- A first electrode (31) and a second

Electrode (32), and

- An organic layer sequence (4) having an active layer for generating visible light between and directly to the two electrodes (31, 32), wherein

the first electrode (31) is permeable to the generated light,

- The second electrode (32) reflective for

visible light is and at least two

Having reflection areas (51, 52),

- The reflection regions (51, 52) seen in plan view of a main side (20) of the carrier (2)

lie next to each other, and

- The reflection regions (51, 52) have different reflectivities for visible light.

Organic light-emitting diode (1) according to the preceding claim,

wherein the second electrode (32) is a metallic electrode,

wherein the reflection regions (51, 52) are formed of different metals or metal alloys and the active layer is continuous over the

Reflection areas (51, 52) extends.

Organic light-emitting diode (1) according to one of

previous claims,

at which the materials for the reflection areas (51, 52) are laterally juxtaposed and, in

Top view, do not overlap.

4. Organic light-emitting diode (1) according to one of claims 1 or 2,

when the material from a first of

Reflection areas (51, 52) is applied continuously and the material from a second of the

Reflection region (51, 52) between the first

Reflection area (51, 52) and the organic

Layer sequence (4) is located.

5. Organic light-emitting diode (1) after the preceding

Claim,

in which the second electrode (32) a

Planarization layer (53) comprising

at least in places between the organic

Layer sequence (4) and the first reflection region (51, 52) is located.

6. Organic light-emitting diode (1) according to one of

previous claims,

in which the reflection regions (51, 52) are electrically operable independently of one another.

7. Organic light-emitting diode (1) according to one of

previous claims,

when switched off by the

Reflection areas (51, 52) due to their

different reflectivities for a viewer a first symbol is shown.

8. Organic light-emitting diode (1) according to one of

previous claims, in which, in a first switched-on state through the reflection areas (51, 52) for a viewer, a second symbol is shown.

9. Organic light-emitting diode (1) according to one of

previous claims,

in which, for a viewer, in a second switched-on state, the main page (20) appears as a homogeneous, unstructured luminous area.

10. Organic light-emitting diode (1) according to one of

previous claims,

in which the reflection regions (51, 52) each comprise at least one of the following materials or each consist of at least one of these materials: Ag, Al, Au, Ca, Co, Cu, Mg, Mn, Mo, Ni, Pb, Pd, Ru , Si, Sn, Zn.

11. Organic light-emitting diode (1) after the preceding

Claim,

in which the reflection areas (51, 52) depending from

at least one metal, are opaque and each have a thickness of at least 100 nm, wherein the reflection regions (51, 52) are the same thickness, wherein the first reflection region (51) made of gold or copper and the second reflection region (52) made of aluminum or is formed of silver, so that the reflection regions (51, 52) have spectrally different reflection characteristics for visible light due to these materials, and

wherein the first electrode (31) is made of a transparent conductive oxide.

12. Organic light-emitting diode (1) according to one of

previous claims,

wherein a first one of the reflection areas (51, 52), seen in plan view, is surrounded all around and continuously by a second one of the reflection areas (51, 52).

13. Organic light-emitting diode (1) according to one of

previous claims,

in which a plurality of the first and a plurality of the second reflection regions (51, 52) are present,

wherein, seen in plan view, at least one of the first reflection regions (51, 52) around and

is continuously surrounded by one of the second reflection regions (51, 52) and at least one of the second reflection regions (51, 52) is surrounded all round and continuously by one of the first reflection regions (51, 52).

14. Organic light-emitting diode (1) according to one of

previous claims,

in which the active layer is continuously over the

Reflection areas (51, 52) is provided to generate white light,

wherein average dimensions of the reflection regions (51, 52), as seen in plan view of the main side (20), are at least 5 mm, and

wherein the light-emitting diode (1) on the main side (20) in operation emitted white light in places and yellow, orange or red light in places.

15. Lighting device with at least one

organic light emitting diode (1) according to one of

previous claims, the lighting device is a vehicle lamp which is part of a vehicle lamp.